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    <h2><a href="index.html">Home</a></h2><h2><a href="https://github.com/multiparty/jiff" target="_blank" class="menu-item" id="github_link" >Github Repo</a></h2><h2><a href="./intro.html" target="_self" class="menu-item" id="github_link" >Tutorial</a></h2><h2><a href="./contributing.html" target="_self" class="menu-item" id="github_link" >Contributing to JIFF</a></h2><h3>Classes</h3><ul><li><a href="GuardedSocket.html">GuardedSocket</a><ul class='methods'><li data-type='method'><a href="GuardedSocket.html#disconnect">disconnect</a></li><li data-type='method'><a href="GuardedSocket.html#is_empty">is_empty</a></li><li data-type='method'><a href="GuardedSocket.html#resend_mailbox">resend_mailbox</a></li><li data-type='method'><a href="GuardedSocket.html#safe_disconnect">safe_disconnect</a></li><li data-type='method'><a href="GuardedSocket.html#safe_emit">safe_emit</a></li></ul></li><li><a href="helpers.Deferred.html">Deferred</a><ul class='methods'><li data-type='method'><a 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href="module-jiff-client-JIFFClient.html#preprocessingDaemon">preprocessingDaemon</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#receive_open">receive_open</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#remove_listener">remove_listener</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#reshare">reshare</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#seed_ids">seed_ids</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#share">share</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#share_array">share_array</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#start_barrier">start_barrier</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient.html#store_preprocessing">store_preprocessing</a></li></ul></li><li><a href="module-jiff-client-JIFFClient_SecretShare.html">SecretShare</a><ul class='methods'><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#add">add</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#bit_decomposition">bit_decomposition</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cadd">cadd</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cdiv">cdiv</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cdivfac">cdivfac</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#ceq">ceq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cgt">cgt</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cgteqn">cgteqn</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#clt">clt</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#clteq">clteq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cmult">cmult</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cneq">cneq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cor_bit">cor_bit</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cpow">cpow</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#csub">csub</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#cxor_bit">cxor_bit</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#div">div</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#eq">eq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#error">error</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#gt">gt</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#gteq">gteq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#if_else">if_else</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#isConstant">isConstant</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#logLEAK">logLEAK</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#lt">lt</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#lt_halfprime">lt_halfprime</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#lteq">lteq</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#mult">mult</a></li><li data-type='method'><a href="module-jiff-client-JIFFClient_SecretShare.html#neq">neq</a></li><li 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<div id="main">
    
    <h1 class="page-title">client/protocols/generic.js</h1>
    

    



    
    <section>
        <article>
            <pre class="prettyprint source linenums"><code>// Generic version of operations
module.exports = function (SecretShare) {
  /**
   * Checks if the given parameter is a constant, used to determine whether constant or secret
   * operations should be executed when the generic version of an operation is called
   * @method isConstant
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   * @param {number/object} o - the parameter to determine.
   * @return {boolean} true if o is a valid constant, false otherwise.
   */
  SecretShare.prototype.isConstant = function (o) {
    return typeof(o) === 'number';
  };

  /**
   * Generic Addition.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method add
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   *
   * @example
   * var shares = jiffClient.share(input);
   * // this will add two secret shared values together
   * var sum1 = shares[1].add(shares[2]);
   * // this will add 3 to the secret input from party 1
   * var sum2 = shares[1].add(3);
   * // both sum1 and sum2 are SecretShares
   */
  SecretShare.prototype.add = function (o) {
    if (this.isConstant(o)) {
      return this.cadd(o);
    }
    return this.sadd(o);
  };


  /**
   * Generic Subtraction.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method sub
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.sub = function (o) {
    if (this.isConstant(o)) {
      return this.csub(o);
    }
    return this.ssub(o);
  };


  /**
   * Generic Multiplication.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method mult
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this multiplication (and internally, the corresponding beaver triplet).
   *                         This id must be unique, and must be passed by all parties to the same instruction.
   *                         this ensures that every party gets a share from the same triplet for every matching instruction. An automatic id
   *                         is generated by increasing a local counter, default ids suffice when all parties execute the
   *                         instructions in the same order. Only used if secret multiplication is used.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.mult = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cmult(o);
    }
    return this.smult(o, op_id);
  };


  /**
   * Generic XOR for bits (both this and o have to be bits to work correctly).
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method xor_bit
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   *                         Only used if secret xor is used..
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.xor_bit = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cxor_bit(o);
    }
    return this.sxor_bit(o, op_id);
  };

  /**
   * Generic OR for bits (both this and o have to be bits to work correctly).
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method or_bit
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   *                         Only used if secret or is used..
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.or_bit = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cor_bit(o);
    }
    return this.sor_bit(o, op_id);
  };

  /**
   * Generic Greater or equal.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method gteq
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.gteq = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cgteq(o, op_id);
    }
    return this.sgteq(o);
  };


  /**
   * Generic Greater than.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method gt
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.gt = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cgt(o, op_id);
    }
    return this.sgt(o, op_id);
  };


  /**
   * Generic Less or equal.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method lteq
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.lteq = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.clteq(o, op_id);
    }
    return this.slteq(o, op_id);
  };


  /**
   * Generic Less than.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method lt
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.lt = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.clt(o, op_id);
    }
    return this.slt(o, op_id);
  };


  /**
   * Generic Equals.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method eq
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.eq = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.ceq(o, op_id);
    }
    return this.seq(o, op_id);
  };


  /**
   * Generic Not Equals.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method neq
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.neq = function (o, op_id) {
    if (this.isConstant(o)) {
      return this.cneq(o, op_id);
    }
    return this.sneq(o, op_id);
  };


  /**
   * Generic Integer Divison.
   * Uses either the constant or secret version of this operator depending on type of paramter.
   * @method div
   * @param {number|module:jiff-client~JIFFClient#SecretShare} o - the other operand (can be either number or share).
   * @param {number} l - the maximum bit length of the two shares.
   * @param {string} [op_id=auto_gen()] - the operation id which is used to identify this operation.
   *                         This id must be unique, and must be passed by all parties to the same instruction, to
   *                         ensure that corresponding instructions across different parties are matched correctly.
   * @return {module:jiff-client~JIFFClient#SecretShare} this party's share of the result.
   * @memberof module:jiff-client~JIFFClient#SecretShare
   * @instance
   */
  SecretShare.prototype.div = function (o, l, op_id) {
    if (this.isConstant(o)) {
      return this.cdiv(o, l, op_id);
    }
    return this.sdiv(o, l, op_id);
  };
};</code></pre>
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